Soy Isoflavones For Inner City Infants At Risk For Asthma (SIRA) Study
Recruiting · Chicago, Illinois
Always free
Study care at no cost to you
For your time and travel
Many studies pay you back
Most need no insurance or papers
Legal status usually isn't required; we'll tell you each study's requirements
Interpreters available
Ask for your language
Your choice
Voluntary — you can stop anytime
What is this study?
The goal of this clinical trial is to compare soy isoflavones to placebo in children who at risk of asthma and have a genetic variation which results in them making more of a pro-inflammatory protein, plasminogen activator inhibitor-1. The main questions this trail seeks to answer is: will soy isoflavones decrease the proportion of infants with aT2 high endotype at the end of treatment, and secondarily decrease the number of wheezing episodes in these children when given in the first year of life.
It is , overseen by an independent and licensed medical staff.
Read the full clinical description
The goal of this clinical trial is to compare soy isoflavones to placebo in children who at risk of asthma and have a genetic variation which results in them making more of a pro-inflammatory protein, plasminogen activator inhibitor-1. The main questions this trail seeks to answer is: will soy isoflavones decrease the proportion of infants with aT2 high endotype at the end of treatment, and secondarily decrease the number of wheezing episodes in these children when given in the first year of life. Participants will be asked to ingest soy isoflavone or placebo twice daily mixed into a liquid or puree vehicle for 7 months from randomization. There will be 3 mandatory in-person visits, and 6 virtual visits in the first year. There will also be 11 monthly questionnaires and 1 in person visit in the observation year. Participants will have 4 nasal swabs, 3 blood draws, and also provide 4 stool samples over the course of the study.
Who this study is looking for
In plain language, from the study's own rules. The study team confirms the full details with you — this isn't a final yes or no.
✅ You may be able to join if…
- •Infants born at term (at least 37 weeks) who are less than 12 months old when they enroll
- •Infants with a high risk of asthma, based on family history of asthma or the child having atopic dermatitis (eczema)
- •Infants with a specific genetic variation called the PAI-1 risk allele (4G4G or 4G5G)
- •Parents/guardians are adults (at least 18) and can understand the study and sign consent
- •Babies who live in certain study areas (pre-selected neighborhoods, or nearby areas with publicly funded health insurance)
🚫 You may not be able to join if…
- •Parents/guardians cannot or will not sign consent or follow the study plan
- •Infants whose feeding situation would not allow them to take the product (soy isoflavones or placebo) mixed into liquid/puree (including expressed breast milk, supplemental formula, or a small amount of water)
- •Infants currently on a soy-based formula
- •Breastfeeding mothers who take soy supplements or soy-enriched foods more than 2 times per week and cannot stop that level during breastfeeding
- •Infants with certain medical problems/risks such as needing intubation before screening, or having many recent hospitalizations or steroid bursts for wheezing/asthma
Are you a good fit?
Simplified highlights. The study team always confirms the full details with you.
- ✓Adults roughly 0–1
- ✓Have Asthma
- !Not for people who are pregnant or breastfeeding
What to expect, step by step
- 1
Usually a few weeks
The study team checks whether the study is a good fit for you, with a visit and sometimes lab tests. You can ask any questions before deciding.
- 2
Treatment
If you join and choose to continue, you receive the study treatment and are watched closely by medical staff.
- 3
Follow-up
After treatment, the team checks on your health and confirms the visit schedule with you. You can leave the study at any point.
Has this treatment been tested before?
Yes. This treatment has already been through earlier human studies for safety before reaching this stage.
What you need to know before you apply
What is this study testing?+
The goal of this clinical trial is to compare soy isoflavones to placebo in children who at risk of asthma and have a genetic variation which results in them making more of a pro-inflammatory protein, plasminogen activator inhibitor-1. The main questions this trail seeks to answer is: will soy isoflavones decrease the proportion of infants with aT2 high endotype at the end of treatment, and secondarily decrease the number of wheezing episodes in these children when given in the first year of life.
Is it safe? Who makes sure of that?+
This is a mid-stage study (Phase 2), looking at safety and whether the treatment works. Every study is reviewed and monitored by an independent ethics board (called an IRB) whose job is to protect participants, and care is overseen by licensed medical staff. You'll be told the known risks before you agree to anything, and you can stop at any time.
Will I get a placebo instead of the real treatment?+
Some studies compare a treatment against a placebo (an inactive version), and some don't. If this one does, the study team will explain your chances of receiving the active treatment before you decide. Nothing is hidden from you.
Do I have to stop taking my current medications?+
It depends on the study. Some let you stay on your current medications and some ask you to adjust them. Never stop a medication on your own — the study team will review everything with you first.
Does it cost anything? Will I be paid?+
The study treatment and study-related visits are provided at no cost to you. Some studies also pay for your time; the coordinator can tell you if this one does. You should never be asked to pay to take part.
Do I need insurance? Will anyone ask about my immigration status?+
No. You do not need health insurance to take part in a research study, and you will not be asked about your immigration status to join. Taking part is about whether you're a medical fit for the study.
What if English isn't my first language?+
You have the right to understand everything before you agree. Study sites can often provide materials or an interpreter in your language — you can ask the coordinator for one.
Is my information private?+
Yes. Your health information is only shared with the study sites you choose to be contacted by, and only to help match and enroll you. It is never sold, and you can ask us to delete it at any time.
Some requirements (like specific lab values or timing) are confirmed directly by the study team, not by us.
Source: ClinicalTrials.gov · NCT05667701 · Locations: Illinois